Southlake has upgraded.In place of a taco cantina, Southlake Boulevard will become the new second location for Dallas’ classy Mesa.Mesa is a Veracruz-style Latin restaurant, known for the Reyes’ family-recipe mole sauce, cochinita pibil and dishes such as snapper Veracruz or lobster enchiladas.The hole-in-the-wall Oak Cliff location has a classy contemporary design, but it is tiny compared with Mesa’s new Southlake Boulevard space, which was formerly Buffalo Cantina, Yucatan Taco Stand and Snookie’s.Co-founder Olga Reyes will handle the cooking in Southlake, a daughter told D Magazine.Mesa fills the need for an urbane Latin restaurant in Northeast Tarrant County, midway between Javier’s in Dallas and Lanny’s in Fort Worth. For a spicy, classy night out, the best choices were Gloria’s in Colleyville or Taco Diner in Southlake.Mesa is expected to open this fall at 2801 E. Southlake Blvd. The current location is open for dinner Tuesday through Saturday, lunch and dinner Sunday at 118 W. Jefferson Blvd.; 214-941-4246, mesadallas.com.‘O sole mio,’ oompahThe Italian-German alliance is complete.The “singing waiters” and pianists have moved to Edelweiss Restaurant in Fort Worth, where they perform at dinner Wednesdays, Thursdays and Sundays since the closing of the old Italian Inn Ridglea.The Zeqiri family owns both restaurants and also added Italian Inn menu favorites at Edelweiss, including lobster ravioli and shrimp fra diavolo.Edelweiss’ old second stage made a great home for the Italian Inn grand piano. The main stage still features German bands and oompah music Fridays and Saturdays, when Edelweiss continues its legacy as a bierhalle.“Our old customers are starting to find us,” Giovanni Zeqiri said last week. “Word is still getting around.”Edelweiss is open Wednesday through Sunday nights and also Sunday for lunch; 3801 Southwest Blvd. (on the Benbrook Traffic Circle), 817-738-5934, edelweissgermanrestaurant.com.NOLA in CowtownThe new wraparound balcony outside Del Frisco’s Double Eagle Steak House in Fort Worth should be open within about a week.That means there’s a chance a New Orleans-style balcony table might be available for DFW Restaurant Week, Aug 12-18.Del Frisco’s has not announced its Restaurant Week menu, but will extend the special though Sept. 2.Meanwhile, Bonnell’s Restaurant has published its menu. For $45 (of which $9 goes to charity), Bonnell’s will serve a three-course dinner Aug. 12-25 featuring pork tenderloin over dirty rice, grilled quail or scallops.Other restaurants offering $35 or $45 specials beginning Aug. 12: Capital Grille, Eddie V’s Prime Seafood, Grace, Lanny’s Alta Cocina Mexicana, Lonesome Dove Western Bistro, Mercury Chop House, Piola Italian Restaurant, Ray’s Prime Steak & Seafood, Reata, Ruth’s Chris Steak House, Silver Fox, Texas de Brazil, and Tillman’s Roadhouse in Fort Worth; Cacharel, The Melting Pot and Piccolo Mondo in Arlington; Boi Na Braza, Ferrari’s Italian Villa and Silver Fox in Grapevine; Kirby’s Prime Steaks & Seafood and Truluck’s in Southlake; The Wild Mushroom in Weatherford; and Hannah’s Off the Square and Queenie’s Steakhouse in Denton.